MSD's DIS Ignition Controls all deliver a stout, CD spark that is capable of burning the majority of air/fuel mixtures. There are of course exceptions, such as full bred race engines running high boost pressures from turbos, blowers or nitrous. To answer these needs, we offer a Higher Output version of the DIS Ignition Controls. Features include Soft Touch Rev Control, Two Step RPM Module Selector, Programmable Timing Control, LED Ignition and Charging Condition Indicator, Ignition Interrupt (can be used as anti-theft) and EMI noise protection. The DIS Plus HO Ignitions produce an incredible 170 millijoules of spark energy with 470 primary volts. This increased output will light up fuel mixtures even under extreme cylinder pressures. The DIS-HO boxes are not CARB approved and are designed for drag racing applications only. Application: Universal Distributorless 4 Cylinder Engines